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Finding the Fourth Proportional to 131,796.44, 181,878.26 and 71,365.80

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Solution

The fourth proportional to 131,796.44, 181,878.26 and 71,365.80 is: 98,484.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,796.44 : 181,878.26 = 71,365.80 : x
  2. Step 2: Convert to fraction form
    131,796.44/181,878.26 = 71,365.80/x
  3. Step 3: Cross multiply
    131,796.44x = 181,878.26 × 71,365.80
  4. Step 4: Simplify right side
    131,796.44x = 12,979,887,170.68
  5. Step 5: Solve for x
    x = 12,979,887,170.68/131,796.44
  6. Step 6: Final answer
    x = 98,484.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.